mosesdecoder/moses/FF/SkeletonTranslationOptionListFeature.h

#pragma once

#include <string>
#include "StatelessFeatureFunction.h"

namespace Moses
{

class SkeletonTranslationOptionListFeature : public StatelessFeatureFunction
{
public:
  SkeletonTranslationOptionListFeature(const std::string &line)
    :StatelessFeatureFunction(1, line)
  {
    ReadParameters();
  }

  bool IsUseable(const FactorMask &mask) const {
    return true;
  }

  void EvaluateInIsolation(const Phrase &source
                , const TargetPhrase &targetPhrase
                , ScoreComponentCollection &scoreBreakdown
                , ScoreComponentCollection &estimatedFutureScore) const
  {}
  
  void EvaluateWithSourceContext(const InputType &input
                , const InputPath &inputPath
                , const TargetPhrase &targetPhrase
                , const StackVec *stackVec
                , ScoreComponentCollection &scoreBreakdown
                , ScoreComponentCollection *estimatedFutureScore = NULL) const
  {}

  void EvaluateTranslationOptionListWithSourceContext(const InputType &input
                , const TranslationOptionList &translationOptionList) const
  {
    vector<float> newScores(m_numScoreComponents);
    newScores[0] = translationOptionList.size();
    
    TranslationOptionList::const_iterator iterTransOpt;
    for(iterTransOpt = translationOptionList.begin() ;
        iterTransOpt != translationOptionList.end() ; ++iterTransOpt) {
      TranslationOption &transOpt = **iterTransOpt;
      
      ScoreComponentCollection &scoreBreakDown = transOpt.GetScoreBreakdown();
      scoreBreakDown.PlusEquals(this, newScores);
      
      transOpt.UpdateScore();
    }
  }

  void EvaluateWhenApplied(const Hypothesis& hypo,
                ScoreComponentCollection* accumulator) const
  {}
  
  void EvaluateWhenApplied(const ChartHypothesis &hypo,
                     ScoreComponentCollection* accumulator) const
  {}


  void SetParameter(const std::string& key, const std::string& value)
  {}

};

}